When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve -a - 4a = -7a - 9z - 2 for a in terms of z.
| 1\(\frac{2}{3}\)z - 2 | |
| 3z + 3 | |
| \(\frac{1}{4}\)z + \(\frac{1}{6}\) | |
| -\(\frac{5}{6}\)z - \(\frac{1}{3}\) |